MontaVista

Cross-LFS

Build your own Linux from the source code for the MIPS. Location for Cross-LFS is located at http://cross-lfs.org

DENX ELDK

DENX Software Engineering provides the ELDK (Embedded Linux Development Kit), a commercial-grade distribution including U-Boot boot loader, Linux kernel tree, cross development tools and an extensive set of native tools.
The ELDK which is Free Software is available for PowerPC, ARM, and MIPS processors and can therefore be downloaded for FREE.
See http://www.denx.de/wiki/DULG/ELDK

emlix

emlix provides a collection of system software for the Au1100 based F+S NetDCU6 boards and the respective BSP (Board Support Package). It is a commercial-grade distribution including U-Boot boot loader, Linux kernel with an extended driver set, cross development tools for Linux/ia32 (including nano-X aka MicroWindows) and a ready-to-run filesystem for the target.
Prior targets for emlix were the NetDCU3 and NetDCU5, upcoming targets (fall 2005) will be the NetDCU8 with an ARM cpu.

TimeSys

midge

midge is a linux mini-distribution for ADM5120 based routers, such as Edimax BR-6104K. It includes basic tools such as sh, ssh, inetd, syslogd, telnet, netcat, tftp, wget, udhcpd, vi, etc. Also midge uses ipkg package manager, which can be used for installing new software

AMiLDA

AMiLDA is a distribution for ADM5120-based devices, which provides a user-friendly interface, along with a really secure environment. It evolves quickly, and every release includes major new features and bug fixes.

Wind River Linux

Wind River Linux is based on pristine source kernel and code, fully tested and validated Linux offering, with optimized tools and development environment Wind River Workbench, an integrated, Eclipse-based development environment.

KaeilOS

KaeilOSÂ® (formerly Klinux) is a GNU/Linux embedded distribution GPL Open Source for industrial applications. It includes an integrated development environment (IDE) and debugging instruments for embedded and real time systems. KaeilOS is based on kernel 2.6.15 and 2.4.x. It supports all the processor families x86, ARM, and optionally MIPS, PPC...